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EWG's Tap Water Database — 2021 UPDATE

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Manganese

Clwsc Canyon Lake Shores

Manganese is a naturally occurring element that is common in food and drinking water. Excessive manganese exposures may impair children's attention, memory and intellectual capacity. Click here to read more about manganese.

MORE ABOUT THIS CONTAMINANT

 

70

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201422.9 ppb52ND - 113.0 ppb
2015ND90ND
2016ND90ND
2017ND40ND
20180.163 ppb81ND - 1.30 ppb
20190.237 ppb358ND - 4.10 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 100 ppb

The EWG Health Guideline of 100 ppb for manganese was defined by the state of Minnesota as a health risk limit, the concentration of a contaminant that can be consumed with little or no risk to health. This health guideline protects against harm to the brain and nervous system.

ppb = parts per billion

All test results

Date Lab ID Result
2014-02-18AC43299ND
2014-02-18AC43304ND
2014-09-03AC65622ND
2014-10-08AC69153113.0 ppb
2014-10-08AC691521.40 ppb
2015-02-03AC78957ND
2015-02-03AC78958ND
2015-02-03AC78955ND
2015-02-03AC78956ND
2015-03-26AC86208ND
2015-03-26AC86203ND
2015-05-13AC91754ND
2015-08-12AD03757ND
2015-12-07AD15630ND
2016-02-03AD21744ND
2016-02-03AD21745ND
2016-02-03AD21743ND
2016-03-09AD27818ND
2016-03-09AD27817ND
2016-03-09AD27815ND
2016-03-09AD27812ND
2016-04-27AD34351ND
2016-04-27AD34346ND
2017-01-25AD66714ND
2017-06-27AD87882ND
2017-06-27AD87883ND
2017-10-05AD99479ND
2018-02-07AE12676ND
2018-02-07AE126771.30 ppb
2018-05-16AE26509ND
2018-05-16AE26510ND
2018-05-17AE26696ND
2018-05-17AE26694ND
2018-05-17AE26695ND
2018-07-26AE34617ND
2019-01-2835444576003SEA1ND
2019-01-2835444576001SEA1ND
2019-01-2835444576004SEA1ND
2019-01-2835444576002SEA10.620 ppb
2019-01-2835444576005SEA1ND
2019-01-2835444576006SEA10.500 ppb
2019-01-2935445084005SEA10.880 ppb
2019-01-2935445084001SEA10.430 ppb
2019-01-2935445084002SEA1ND
2019-01-2935445084004SEA1ND
2019-01-2935445084003SEA1ND
2019-01-2935445084006SEA1ND
2019-02-06AE53091ND
2019-04-23AE63300ND
2019-04-23AE63299ND
2019-04-23AE63301ND
2019-07-1735482964002SEA20.640 ppb
2019-07-1735482964003SEA2ND
2019-07-1735482964001SEA20.620 ppb
2019-07-1735482964004SEA20.510 ppb
2019-07-1835483382006SEA24.10 ppb
2019-07-1835483382005SEA2ND
2019-07-1835483382007SEA2ND
2019-07-1835483382004SEA3ND
2019-07-1835483382003SEA3ND
2019-07-1835483382002SEA2ND
2019-07-1835483382001SEA2ND
2019-08-20AE79754ND
2019-09-3035501460002SEA2ND
2019-09-3035501460001SEA2ND
2019-10-2935508290001SEA4ND
2019-10-2935508290002SEA4ND
2019-10-30AE87915ND
2019-10-30AE87914ND
2019-10-30AE87913ND